Ketones as Electrophile in Nitroaldol Reaction: Synthesis of β,β-Disubstituted- 1,3‑dinitroalkanes and Allylic Nitro Compounds

β,β-Disubstituted-1,3-dinitro compounds were obtained exclusively with an overall yield of 83% through a domino nitroaldol/elimination/1,4-addition process, when excess nitromethane was added to cyclohexanone or butanone using DBU (1,8-diazabicyclo[5.4.0]undec-7-ene), as basic catalyst. On the other hand, β-nitroalcohols could be in 30-84% yield, reacts different aliphatic ketones stoichiometric amounts, presence catalytic amounts K2CO3(s), Amberlyst®-A21 TBAF.3H2O (tetra-n-butylammonium fluoride trihydrate)/THF (tetrahydrofuran). In addition, new and versatile route obtainment allylic nitro compounds, by treatment acetylated nitroalcohols aldehydes TBAF.3H2O, via one-pot elimination/nitroaldol reaction sequence, developed.